Main System Configuration
User Manual CWD2005 Plus
4. Main System Configuration
The analyzer is developed and tested to directly operate in hazardous areas, the class1,
Div.2, according to NEC500.
The enclosure is equipped with a compressed air purging and safety shutdown.
In order to reach the safety class described above, the analyzer was equipped with a
compressed air purging system. Compressed air is needed to rinse the enclosure to assure
no gas left in the system. This is important to distinguish whether or not a leak occurs during
leak-testing.
Furthermore, the analyzer requires air for combustion which is fed in this way. In this design,
instead of the air filter, a manometer will be placed which indicates the pressure in the
enclosure.
Between the chambers of the enclosure a connection is built in, so that both chambers are all
flushed with the compressed air.
The exhaust gas duct is built with a flame barrier.
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